Leaked source code of windows server 2003
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153 lines
3.2 KiB

#include <stdlib.h>
#include <stdio.h>
#include <windows.h>
#define ONE_MB (1024*1024)
#define TWO_MB (2*ONE_MB)
#define PAGE_SIZE (4096)
#define PAGESPERTWO_MB (TWO_MB/PAGE_SIZE)
#define TWO_MBREGIONS (8)
#define NEW_CELL(id,i) ( (id)<<20 | ((i)&0x000fffff) )
CRITICAL_SECTION ErrorCrit;
PUCHAR RegionBase;
DWORD
SelectPage(
void
)
{
DWORD PageNum;
PageNum = GetTickCount();
PageNum = PageNum >> 3;
PageNum = PageNum & (PAGESPERTWO_MB-1);
return PageNum;
}
void
CellError(
DWORD TwoMegRegion,
DWORD *Address,
DWORD ThreadId,
DWORD OriginalCell,
DWORD CurrentCell,
DWORD Iteration
)
{
EnterCriticalSection(&ErrorCrit);
printf("PAGEIT: Cell Error at %x %p %02lx %08x vs %08x (iter %d)\n",
TwoMegRegion,
Address,
ThreadId,
OriginalCell,
CurrentCell,
Iteration
);
DebugBreak();
LeaveCriticalSection(&ErrorCrit);
}
void
PrintHeartBeat(
DWORD Id,
DWORD Counter
)
{
EnterCriticalSection(&ErrorCrit);
printf("PAGEIT: HeartBeat Id %3d iter %8d\n",
Id,
Counter
);
LeaveCriticalSection(&ErrorCrit);
}
#if _MSC_FULL_VER >= 13008827
#pragma warning(push)
#pragma warning(disable:4715) // Not all control paths return (due to infinite loop)
#endif
DWORD
ThreadRoutine(
PVOID Unused
)
{
DWORD Id;
DWORD Counter;
DWORD PageNumber;
DWORD CellOffset;
DWORD *CellAddress;
DWORD OriginalCell;
DWORD NewCell;
DWORD i;
SetThreadPriority(GetCurrentThread(),THREAD_PRIORITY_LOWEST);
Id = GetCurrentThreadId();
Counter = 0;
for(;;) {
PageNumber = SelectPage();
CellOffset = PageNumber*PAGE_SIZE + Id*sizeof(DWORD);
CellAddress = (DWORD *)(RegionBase + CellOffset);
OriginalCell = *CellAddress;
NewCell = NEW_CELL(Id,Counter);
for(i=0;i<TWO_MBREGIONS;i++) {
CellAddress = (DWORD *)(RegionBase + i*TWO_MB + CellOffset);
if ( OriginalCell != *CellAddress ) {
CellError(i,CellAddress,Id,OriginalCell,*CellAddress,Counter);
}
*CellAddress = NewCell;
}
Counter++;
if ( (Counter/50) * 50 == Counter ) {
Sleep(500);
}
if ( (Counter/1024) * 1024 == Counter ) {
PrintHeartBeat(Id,Counter);
}
}
return 0;
}
#if _MSC_FULL_VER >= 13008827
#pragma warning(pop)
#endif
DWORD
_cdecl
main(
int argc,
char *argv[],
char *envp[]
)
{
DWORD i;
DWORD Id;
HANDLE Thread;
InitializeCriticalSection(&ErrorCrit);
RegionBase = VirtualAlloc(NULL,TWO_MBREGIONS*TWO_MB,MEM_COMMIT,PAGE_READWRITE);
if ( !RegionBase ) {
printf("PAGEIT: VirtualAlloc Failed %d\n",GetLastError());
ExitProcess(1);
}
for (i=0;i<(TWO_MBREGIONS-1);i++){
Thread = CreateThread(NULL,0,ThreadRoutine,NULL,0,&Id);
if ( Thread ) {
CloseHandle(Thread);
}
}
ThreadRoutine(NULL);
return 0;
}